Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/asm/sparc/V9ReadDecoder.java @ 2177:3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank
author | coleenp |
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date | Thu, 27 Jan 2011 16:11:27 -0800 |
parents | c18cbe5936b8 |
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rev | line source |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.asm.sparc; | |
26 | |
27 import sun.jvm.hotspot.asm.*; | |
28 | |
29 class V9ReadDecoder extends InstructionDecoder | |
30 implements V9InstructionDecoder { | |
31 Instruction decode(int instruction, SPARCInstructionFactory factory) { | |
32 SPARCV9InstructionFactory v9factory = (SPARCV9InstructionFactory) factory; | |
33 Instruction instr = null; | |
34 int specialRegNum = getSourceRegister1(instruction); | |
35 | |
36 // rs1 values 1, 7-14 are reserved - see page 214, A.44 Read State Register. | |
37 if (specialRegNum == 1 || (specialRegNum > 6 && specialRegNum < 15)) { | |
38 instr = v9factory.newIllegalInstruction(instruction); | |
39 } else { | |
40 int rdNum = getDestinationRegister(instruction); | |
41 if (specialRegNum == 15) { | |
42 // may be stbar, member or illegal | |
43 if (rdNum == 0) { | |
44 boolean iBit = isIBitSet(instruction); | |
45 if (iBit) { | |
46 instr = v9factory.newV9MembarInstruction((instruction & MMASK_MASK) >>> MMASK_START_BIT, | |
47 (instruction & CMASK_MASK) >>> CMASK_START_BIT); | |
48 } else { | |
49 instr = v9factory.newStbarInstruction(); | |
50 } | |
51 } else { // rd != 0 && rs1 == 15 | |
52 instr = v9factory.newIllegalInstruction(instruction); | |
53 } | |
54 } else { | |
55 int asrRegNum = -1; | |
56 if (specialRegNum > 15){ | |
57 asrRegNum = specialRegNum; | |
58 specialRegNum = SPARCV9SpecialRegisters.ASR; | |
59 } | |
60 SPARCRegister rd = SPARCRegisters.getRegister(rdNum); | |
61 instr = v9factory.newV9ReadInstruction(specialRegNum, asrRegNum, rd); | |
62 } | |
63 } | |
64 return instr; | |
65 } | |
66 } |